public class String_11 {
    public static void main(String[] args) {
        String s="23";
        Integer a=25;
        int b = Integer.valueOf(s);
        b+=1;
        System.out.println(b);

        String x="HKGCG";
        String substring = x.substring(2);
        System.out.println(substring);
    }
}
